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https://issues.apache.org/jira/browse/SPARK-29237?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun resolved SPARK-29237.
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Fix Version/s: 3.0.0
Assignee: Maxim Gekk
Resolution: Fixed
This is resolved via https://github.com/apache/spark/pull/25924
> Use _FUNC_ in expression examples
> ---------------------------------
>
> Key: SPARK-29237
> URL: https://issues.apache.org/jira/browse/SPARK-29237
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Maxim Gekk
> Assignee: Maxim Gekk
> Priority: Minor
> Fix For: 3.0.0
>
>
> Some examples for expressions use function names directly instead of _FUNC_:
> {code}
> $ find . -name "*.scala" -print0|xargs -0 grep -n -i '> SELECT'|grep -v _FUNC_
> ./sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/arithmetic.scala:453:
> > SELECT MOD(2, 1.8);
> ./sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/conditionalExpressions.scala:113:
> > SELECT CASE WHEN 1 > 0 THEN 1 WHEN 2 > 0 THEN 2.0 ELSE 1.2 END;
> ./sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/conditionalExpressions.scala:115:
> > SELECT CASE WHEN 1 < 0 THEN 1 WHEN 2 > 0 THEN 2.0 ELSE 1.2 END;
> ./sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/conditionalExpressions.scala:117:
> > SELECT CASE WHEN 1 < 0 THEN 1 WHEN 2 < 0 THEN 2.0 END;
> ./sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala:1100:
> > SELECT from_utc_timestamp('2016-08-31', 'Asia/Seoul');
> ./sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringExpressions.scala:1126:
> > SELECT POSITION('bar' IN 'foobarbar');
> ./sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringExpressions.scala:1735:
> > SELECT CHAR_LENGTH('Spark SQL ');
> ./sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringExpressions.scala:1737:
> > SELECT CHARACTER_LENGTH('Spark SQL ');
> ...
> {code}
> Need to replace the function names by _FUNC_ to avoid errors in examples in
> the future. Name binding must be done only in one place FunctionRegistry
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